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    • 2. 发明申请
    • A METHOD OF INCREASING THE PERFORMANCE OF A CARBONACEOUS FUEL COMBUSTING BOILER SYSTEM
    • 一种提高燃烧燃烧锅炉系统性能的方法
    • WO2011048520A3
    • 2013-08-01
    • PCT/IB2010054464
    • 2010-10-04
    • FOSTER WHEELER ENERGY CORPFAN ZHENHACK HORSTSELTZER ANDREW
    • FAN ZHENHACK HORSTSELTZER ANDREW
    • F01K13/02F01K7/22F01K7/38F01K7/40
    • F01K7/22F01K7/38F01K7/40F01K13/02
    • A method of increasing the power of a carbonaceous fuel combusting boiler system. The method includes the steps of (a) feeding carbonaceous fuel (16) into a furnace (14) of the boiler plant at a fuel feeding rate, (b) feeding oxidant gas (18) into the furnace for combusting the fuel to produce exhaust gas, (c) discharging the exhaust gas from the furnace via an exhaust gas channel (20), (d) conveying a stream of feedwater from a boiler economizer (38) arranged in the exhaust gas channel to evaporating and superheating heat exchange surfaces arranged in the furnace and in the exhaust gas channel for converting the feedwater to superheated steam, (e) expanding the superheated steam in a high-pressure steam turbine (50) for generating power, (f) extracting steam (74) from the high-pressure steam turbine at a decreased rate for preheating the feedwater, (g) conveying steam from the high-pressure steam turbine at an increased rate to a reheater (36) arranged in the exhaust gas channel for generating reheated steam, (h) expanding the reheated steam in an intermediate pressure steam turbine (52) for generating power, and (i) conveying the exhaust gas in the exhaust gas channel from the reheater through a boiler economizer to a gas heater (42). The method also includes increasing the heat exchange surface area of at least one of the reheater and the boiler economizer and/ or adding a high pressure economizer downstream of the boiler economizer and upstream of the gas heater.
    • 一种提高含碳燃料燃烧锅炉系统功率的方法。 该方法包括以下步骤:(a)以燃料供给速率将碳质燃料(16)进料到锅炉设备的炉子(14)中,(b)将氧化剂气体(18)供入炉中以燃烧燃料以产生排气 气体,(c)经由排气通道(20)从炉内排出废气;(d)从布置在排气通道中的锅炉节能器(38)输送给水流以蒸发和过热热交换面 (e)在用于发电的高压蒸汽轮机(50)中膨胀过热蒸汽,(f)从高压蒸汽涡轮机(50)中提取蒸汽(74) (g)将来自高压蒸气轮机的蒸汽以增加的速率输送到布置在废气通道中的再热器(36),以产生再热蒸汽,(h)将蒸汽涡轮膨胀, 中间蒸汽再加热蒸汽 用于产生动力的可靠的蒸汽轮机(52),以及(i)将废气通道中的废气从再热器通过锅炉节能器输送到气体加热器(42)。 该方法还包括增加再热器和锅炉节能器中的至少一个的热交换表面积和/或在锅炉节能器下游和气体加热器的上游添加高压节能器。
    • 3. 发明申请
    • RADIANT SUPERHEATER
    • 辐射超级加热器
    • WO2013008130A3
    • 2014-01-09
    • PCT/IB2012053370
    • 2012-07-03
    • FOSTER WHEELER NORTH AMERICA CORPSELTZER ANDREWFAN ZHENHACK HORSTGAGLIANO MICHAELSTANKO GREGORY
    • SELTZER ANDREWFAN ZHENHACK HORSTGAGLIANO MICHAELSTANKO GREGORY
    • F22G1/06F22G1/00F22G1/08F22G7/00F22G7/08
    • F22G1/06F22G1/08
    • A radiant superheater (26) arranged to hang at the upper portion of a furnace (12) of a boiler. The radiant superheater (26) is substantially planar and includes a first vertical (34) pass, a first connection pass (36), a second vertical pass (38), a third vertical pass (40), a second connection pass (42), and a fourth vertical pass (44). Each vertical pass includes an upper end and a lower end. The vertical passes are connected in series, so that steam to be superheated enters at the upper end of the first vertical pass and flows through the first vertical pass and from the lower end of the first vertical pass via the first connection pass to the lower end of the second vertical pass and through the second vertical pass and from the upper end of the second vertical pass to the upper end of the third vertical pass and through the third vertical pass and from the lower end of the third vertical pass via the second connection pass to the lower end of the fourth vertical pass and through the fourth vertical pass, to be discharged from the upper end of the fourth vertical pass. The first connection pass is arranged below the second connection pass so as to shield the second connection pass from radiation from the lower portion of the furnace.
    • 辐射过热器(26)布置成悬挂在锅炉的炉子(12)的上部。 辐射过热器(26)基本上是平面的,并且包括第一垂直(34)通道,第一连接通道(36),第二垂直通道(38),第三垂直通道(40),第二连接通道(42) ,和第四垂直通道(44)。 每个垂直通道包括上端和下端。 垂直通道串联连接,使得过热蒸汽进入第一垂直通道的上端,并通过第一垂直通道并从第一垂直通道的下端经由第一连接通道流到下端 的第二垂直行程,并且通过第二垂直行程,并且从第二垂直行程的上端到第三垂直行程的上端,并且经过第三垂直行程,并且从第三垂直行程的下端经由第二连接 通过第四垂直行程的下端并通过第四垂直行程从第四垂直行程的上端排出。 第一连接通道被布置在第二连接通道下方,以便屏蔽来自熔炉下部的辐射的第二连接通道。
    • 4. 发明申请
    • METHOD OF CONTROLLING A BOILER PLANT DURING SWITCHOVER FROM AIR-COMBUSTION TO OXYGEN-COMBUSTION
    • 在从空气燃烧到氧气燃烧期间控制锅炉设备的方法
    • WO2011148298A3
    • 2013-05-16
    • PCT/IB2011052177
    • 2011-05-18
    • FOSTER WHEELER NORTH AMERICA CORPSELTZER ANDREWFAN ZHENHACK HORST
    • SELTZER ANDREWFAN ZHENHACK HORST
    • F23L7/00
    • F23L7/007Y02E20/344
    • A method of controlling a boiler plant during a switchover period from an air- combustion mode to an oxygen-combustion mode. The method includes steps of feeding fuel into a furnace of the boiler plant at a rate determined by a fuel feeding scheme, feeding air into the furnace at a rate determined by a descending air feeding scheme, feeding substantially pure oxygen into the furnace at a rate determined by an ascending oxygen feeding scheme, and recirculating flue gas into the furnace at a rate determined by an ascending flue gas recirculating scheme. The fuel feeding scheme, the air feeding scheme and the oxygen feeding scheme are such that the fuel is combusted and the flue gas containing residual oxygen is produced. Also, the fuel feeding scheme, the air feeding scheme and the oxygen feeding scheme are such that the content of residual oxygen in the flue gas is, during at least a portion of the switchover period, greater than during any of the air-combustion mode and the oxygen-combustion mode. The method makes it possible to reduce CO2 emissions and O2 consumption quickly during the short switchover period.
    • 一种在从空气燃烧模式到氧气燃烧模式的切换期间控制锅炉设备的方法。 该方法包括以燃料供给方案确定的速率将燃料供给到锅炉的炉中的步骤,以由下降空气供给方案确定的速率将空气进入炉中,以基本上纯的氧气以一定的速率 由上升的氧气供给方案确定,并且以烟道气再循环方案确定的速率将烟道气再循环到炉中。 燃料供给方案,供气方案和供氧方式是燃料燃烧,并且产生含有残余氧气的烟道气。 此外,燃料供给方案,空气供给方案和供氧方案是这样的,即在至少部分切换期间内,废气中的残余氧含量大于空气燃烧模式 和氧气燃烧模式。 该方法可以在短时间内快速减少二氧化碳排放量和氧气消耗。
    • 5. 发明申请
    • METHOD OF CONTROLLING A PROCESS OF GENERATING POWER BY OXYFUEL COMBUSTION
    • 通过氧气燃烧控制发电功率的方法
    • WO2009081364A3
    • 2009-10-29
    • PCT/IB2008055454
    • 2008-12-19
    • FOSTER WHEELER ENERGY CORP
    • SELTZER ANDREWFAN ZHENHACK HORSTROBERTSON ARCHIBALDWU SONG
    • F23C9/00F23L7/00
    • F23C9/003F23C2202/30F23C2202/50F23L7/007F23L2900/07005F23L2900/07006F23L2900/07007Y02E20/322Y02E20/344
    • At full load conditions, the method includes introducing a first carbonaceous fuel feed stream into a furnace, introducing a first substantially pure oxygen feed stream into the furnace for combusting the first carbonaceous fuel feed stream with the oxygen, and recirculating a portion of the exhaust gas discharged from the furnace at a first recirculation flow rate to the furnace, to form, together with the first substantially pure oxygen feed stream, a first inlet gas stream having a predetermined average oxygen content, thereby discharging exhaust gas from the furnace at a first discharge flow rate. In second load conditions, corresponding to at most 90% load, the method includes introducing a second carbonaceous fuel feed stream into the furnace, introducing a second substantially pure oxygen feed stream into the furnace for combusting the second carbonaceous fuel feed stream with the oxygen, and recirculating a portion of the exhaust gas discharged from the furnace at a second recirculation flow rate to the furnace, to form, together with the second substantially pure oxygen feed stream, a second inlet gas stream, so as to discharge exhaust gas from the furnace at a second discharge flow rate, and controlling the second recirculation flow rate to be from the first recirculation flow rate to a value providing the second discharge flow rate to be substantially as high as the first discharge flow rate.
    • 在满载条件下,该方法包括将第一含碳燃料进料流引入炉中,将第一基本上纯的氧气进料流引入炉中,以使第一含碳燃料进料流与氧气一起燃烧,并将一部分废气 以第一再循环流量从炉中排出到炉中,与第一基本上纯的氧气进料流一起形成具有预定平均氧含量的第一入口气流,从而在第一次排出时从炉排出废气 流量。 在第二负载条件下,对应于至多90%的负载,该方法包括将第二碳质燃料进料流引入炉中,将第二基本上纯的氧气进料流引入炉中,以使第二碳质燃料进料流与氧气一起燃烧, 将从炉排出的废气的一部分以第二再循环流量再循环到炉中,与第二基本上纯的氧气进料流一起形成第二入口气流,从而排出来自炉的废气 并且将第二再循环流量从第一再循环流量控制到提供第二排出流量的值基本上与第一排出流量一样高的值。
    • 7. 发明申请
    • OXYFUEL COMBUSTING BOILER SYSTEM AND A METHOD OF GENERATING POWER BY USING THE BOILER SYSTEM
    • 氧气燃烧锅炉系统和使用锅炉系统发电的方法
    • WO2009130660A3
    • 2010-12-23
    • PCT/IB2009051624
    • 2009-04-21
    • FOSTER WHEELER ENERGY CORP
    • HACK HORSTSELTZER ANDREWFAN ZHENROBERTSON ARCHIBALDERIKSSON TIMOSIPPU OSSI
    • F01K7/24F01K7/38
    • F22B1/02F01K7/24F01K7/38F01K13/00Y02E20/12Y02E20/344
    • Carbonaceous fuel is combusted with an oxidant gas in a furnace of a boiler system to generate power. Oxidant gas is fed into the furnace for combusting the fuel to produce exhaust gas, the exhaust gas is discharged from the furnace via an exhaust gas channel, a stream of feedwater is conveyed from a final economizer arranged in the exhaust gas channel to evaporating and superheating heat exchange surfaces arranged in the furnace and in the exhaust gas channel for converting the feedwater to superheated steam, the superheated steam is converted in a high-pressure steam turbine for generating power, a first portion of steam is extracted from the high-pressure steam turbine for preheating the feedwater, a second portion of steam is conveyed from the high-pressure steam turbine to reheating heat exchange surfaces arranged in the exhaust gas channel for generating reheated steam, and the reheated steam is expanded in an intermediate pressure steam turbine for generating power. The oxidant gas can be a mixture of substantially pure oxygen and recycled exhaust gas, and the ratio of the first and second portions of steam can be controlled to obtain a desired flue gas temperature in the exhaust gas channel downstream of the final economizer.
    • 碳酸燃料在锅炉系统的炉中与氧化剂气体一起燃烧以发电。 将氧化剂气体送入炉内燃烧燃料以产生废气,排气通过废气通道从炉排出,给水流从布置在排气通道中的最终节能器输送至蒸发和过热 热交换表面布置在炉子和废气通道中,用于将给水转化为过热蒸汽,过热蒸汽在用于发电的高压蒸汽轮机中转化,第一部分蒸汽从高压蒸汽 用于预热给水的涡轮机,第二部分蒸汽从高压蒸汽轮机输送到布置在排气通道中的再加热热交换表面,用于产生再热蒸汽,再加热蒸汽在中压蒸汽轮机中膨胀以产生 功率。 氧化剂气体可以是基本上纯的氧气和再循环废气的混合物,并且可以控制蒸汽的第一和第二部分的比例,以在最终节能器下游的废气通道中获得期望的烟道气体温度。
    • 8. 发明申请
    • METHOD OF AND POWER PLANT FOR GENERATING POWER BY OXYFUEL COMBUSTION
    • 用于通过氧气燃烧发电的方法和发电厂
    • WO2008149284A3
    • 2009-11-26
    • PCT/IB2008052155
    • 2008-06-03
    • FOSTER WHEELER ENERGY CORP
    • FAN ZHENHACK HORSTSELTZER ANDREW
    • F23J15/06F23L7/00F23N3/00
    • F23L7/007B01D53/002B01D53/62B01D2257/504F01K7/16F23J15/06F23J2900/15061F23L2900/07001F23L2900/07003F23N3/002Y02A50/2342Y02C10/04Y02E20/322Y02E20/326Y02E20/328Y02E20/344Y02E20/363
    • A method of and a power plant for generating power by combusting carbonaceous fuel with substantially pure oxygen, and a method of modifying a process of generating power by combusting carbonaceous fuel from combusting the fuel with air to combusting the fuel with substantially pure oxygen. The methods include feeding substantially pure oxygen into a furnace for combusting fuel with the oxygen to produce exhaust gas including mainly carbon dioxide and water, recovering low-grade heat from the exhaust gas by using multiple exhaust gas coolers arranged in a downstream portion of the exhaust gas channel, wherein a first portion of the recovered low-grade heat is used for preheating feedwater; pressurizing a first portion of the exhaust gas in multiple exhaust gas compressors so as to produce liquid carbon dioxide, recycling a second portion of the exhaust gas to the furnace via an exhaust gas recycling channel, using a first portion of steam extracted from a steam turbine system to preheat feedwater, wherein the first portion of the recovered low-grade heat is more than 50 % of the total amount of recovered low-grade heat, or larger than the first portion of the recovered low-grade heat in the air-fired process, allowing minimizing of the first portion of the extracted steam, and the expanding of a second portion of the extracted steam in at least one auxiliary steam turbine for driving at least one compressor or at least one pump of the power plant.
    • 一种用于通过以基本上纯的氧气燃烧含碳燃料来发电的方法和电厂,以及通过燃烧含碳燃料来燃烧燃料以使燃料与空气燃烧以基本上纯氧燃烧而改变发电的方法。 所述方法包括将基本上纯的氧气输送到炉中,用于与氧气一起燃烧燃料以产生主要包括二氧化碳和水的废气,通过使用排放在排气的下游部分中的多个排气冷却器从废气中回收低等级的热量 气体通道,其中回收的低等级热量的第一部分用于预热给水; 在多个废气压缩机中对排气的第一部分加压以产生液态二氧化碳,通过废气再循环通道将废气的第二部分再循环到炉中,使用从汽轮机抽出的蒸汽的第一部分 系统预热给水,其中回收的低等级热量的第一部分是回收低级热量的总量的50%以上,或大于空燃烧中回收的低等级热量的第一部分 过程,允许最小化提取的蒸汽的第一部分,以及在至少一个辅助蒸汽涡轮机中将提取的蒸汽的第二部分膨胀,用于驱动发电厂的至少一个压缩机或至少一个泵。
    • 10. 发明专利
    • Method of controlling a process of generating power by oxyfuel combustion
    • AU2008341526A1
    • 2009-07-02
    • AU2008341526
    • 2008-12-19
    • FOSTER WHEELER ENERGY CORP
    • ROBERTSON ARCHIBALDWU SONGFAN ZHENHACK HORSTSELTZER ANDREW
    • F23C9/00F23L7/00
    • A method of controlling a process of generating power in a power plant with a boiler by combusting carbonaceous fuel with substantially pure oxygen. At full load conditions, the method includes introducing a first carbonaceous fuel feed stream into a furnace, introducing a first substantially pure oxygen feed stream into the furnace for combusting the first carbonaceous fuel feed stream with the oxygen, and recirculating a portion of the exhaust gas discharged from the furnace at a first recirculation flow rate to the furnace, to form, together with the first substantially pure oxygen feed stream, a first inlet gas stream having a predetermined average oxygen content, thereby discharging exhaust gas from the furnace at a first discharge flow rate. In second load conditions, corresponding to at most 90% load, the method includes introducing a second carbonaceous fuel feed stream into the furnace, introducing a second substantially pure oxygen feed stream into the furnace for combusting the second carbonaceous fuel feed stream with the oxygen, and recirculating a portion of the exhaust gas discharged from the furnace at a second recirculation flow rate to the furnace, to form, together with the second substantially pure oxygen feed stream, a second inlet gas stream, so as to discharge exhaust gas from the furnace at a second discharge flow rate, and controlling the second recirculation flow rate to be from the first recirculation flow rate to a value providing the second discharge flow rate to be substantially as high as the first discharge flow rate.